Abstract

A new design for an aberration-corrected concave grating for the spectral region near 10 µm is presented. It was designed for use in the ground-based astronomical medium-resolution (λ/Δλ ∼ 100) Mid-Infrared Camera and Spectrometer (MICS). It provides a flat focal plane for a wide spectral range (7.5–13.5 µm) with small aberrations, permitting efficient long-slit observations in the mid-infrared region. It permits a simple design of the spectrometer without collimator and camera mirrors, which is quite advantageous for cryogenic instruments. The grating has variable spacing grooves to reduce aberrations. In addition, the grating surface figure is designed to be toroidal and in the direction perpendicular to the grooves, aspherical, to suppress the aberrations further over a wide spectral range. The angle of the grooves is also varied to yield better efficiency near the blaze angle. The grating was fabricated by high-quality ultraprecision machining, which made these features possible. Test observations confirmed that the designed spectral resolution was achieved.

© 2000 Optical Society of America

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  1. R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
    [CrossRef]
  2. D. W. Koerner, M. E. Ressler, M. W. Werner, D. E. Backman, “Mid-infrared imaging of a circumstellar disk around HR 4796: mapping the debris of planetary formation,” Astrophys. J. 503, L83–L87 (1998).
    [CrossRef]
  3. T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
    [CrossRef]
  4. T. L. Roellig, T. Onaka, T. J. McMahon, T. Tanabe, “The mid-infrared spectrometer on the Infrared Telescope in Space (IRTS) mission,” Astrophys. J. 428, 370–376 (1994).
    [CrossRef]
  5. T. Onaka, “Aberration-corrected concave grating for the mid-infrared spectrometer aboard the Infrared Telescope in Space,” Appl. Opt. 34, 659–666 (1995).
    [CrossRef] [PubMed]
  6. W. T. Welford, “Aberration theory of gratings and grating mountings,” in Progress in Optics, E. Wolf, ed. (Pergamon, New York, 1965), Vol. 4, pp. 241–280.
  7. T. Harada, T. Kita, “Mechanically ruled aberration-corrected concave gratings,” Appl. Opt. 19, 3987–3993 (1994).
    [CrossRef]
  8. T. Harada, K. Takahashi, H. Sakuma, A. Osyczka, “Optimum design of a grazing-incidence flat-field spectrograph with a spherical varied-line-space grating,” Appl. Opt. 38, 2743–2748 (1999).
    [CrossRef]
  9. T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

1999 (2)

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

T. Harada, K. Takahashi, H. Sakuma, A. Osyczka, “Optimum design of a grazing-incidence flat-field spectrograph with a spherical varied-line-space grating,” Appl. Opt. 38, 2743–2748 (1999).
[CrossRef]

1998 (2)

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

D. W. Koerner, M. E. Ressler, M. W. Werner, D. E. Backman, “Mid-infrared imaging of a circumstellar disk around HR 4796: mapping the debris of planetary formation,” Astrophys. J. 503, L83–L87 (1998).
[CrossRef]

1995 (1)

1994 (2)

T. L. Roellig, T. Onaka, T. J. McMahon, T. Tanabe, “The mid-infrared spectrometer on the Infrared Telescope in Space (IRTS) mission,” Astrophys. J. 428, 370–376 (1994).
[CrossRef]

T. Harada, T. Kita, “Mechanically ruled aberration-corrected concave gratings,” Appl. Opt. 19, 3987–3993 (1994).
[CrossRef]

Backman, D. E.

D. W. Koerner, M. E. Ressler, M. W. Werner, D. E. Backman, “Mid-infrared imaging of a circumstellar disk around HR 4796: mapping the debris of planetary formation,” Astrophys. J. 503, L83–L87 (1998).
[CrossRef]

Fazio, G.

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

Fisher, S.

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

Harada, T.

Hartmann, L.

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

Jayawardhana, R.

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

Kataza, H.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

Kita, T.

Koerner, D. W.

D. W. Koerner, M. E. Ressler, M. W. Werner, D. E. Backman, “Mid-infrared imaging of a circumstellar disk around HR 4796: mapping the debris of planetary formation,” Astrophys. J. 503, L83–L87 (1998).
[CrossRef]

McMahon, T. J.

T. L. Roellig, T. Onaka, T. J. McMahon, T. Tanabe, “The mid-infrared spectrometer on the Infrared Telescope in Space (IRTS) mission,” Astrophys. J. 428, 370–376 (1994).
[CrossRef]

Miyata, T.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

Mochizuki, K.

T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

Nakamura, K.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

Okamoto, Y.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

Onaka, T.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

T. Onaka, “Aberration-corrected concave grating for the mid-infrared spectrometer aboard the Infrared Telescope in Space,” Appl. Opt. 34, 659–666 (1995).
[CrossRef] [PubMed]

T. L. Roellig, T. Onaka, T. J. McMahon, T. Tanabe, “The mid-infrared spectrometer on the Infrared Telescope in Space (IRTS) mission,” Astrophys. J. 428, 370–376 (1994).
[CrossRef]

T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

Osyczka, A.

Pina, R.

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

Ressler, M. E.

D. W. Koerner, M. E. Ressler, M. W. Werner, D. E. Backman, “Mid-infrared imaging of a circumstellar disk around HR 4796: mapping the debris of planetary formation,” Astrophys. J. 503, L83–L87 (1998).
[CrossRef]

Roellig, T. L.

T. L. Roellig, T. Onaka, T. J. McMahon, T. Tanabe, “The mid-infrared spectrometer on the Infrared Telescope in Space (IRTS) mission,” Astrophys. J. 428, 370–376 (1994).
[CrossRef]

T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

Sakuma, H.

Shibai, H.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

Takahashi, K.

Tanabe, T.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

T. L. Roellig, T. Onaka, T. J. McMahon, T. Tanabe, “The mid-infrared spectrometer on the Infrared Telescope in Space (IRTS) mission,” Astrophys. J. 428, 370–376 (1994).
[CrossRef]

T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

Telesco, C.

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

Welford, W. T.

W. T. Welford, “Aberration theory of gratings and grating mountings,” in Progress in Optics, E. Wolf, ed. (Pergamon, New York, 1965), Vol. 4, pp. 241–280.

Werner, M. W.

D. W. Koerner, M. E. Ressler, M. W. Werner, D. E. Backman, “Mid-infrared imaging of a circumstellar disk around HR 4796: mapping the debris of planetary formation,” Astrophys. J. 503, L83–L87 (1998).
[CrossRef]

Yamamura, I.

T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

Yamashita, Y.

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

Yuen, L.

T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

Appl. Opt. (3)

Astrophys. J. (3)

R. Jayawardhana, S. Fisher, L. Hartmann, C. Telesco, R. Pina, G. Fazio, “A dust disk surrounding the young A star HR 4796A,” Astrophys. J. 503, L79–L82 (1998).
[CrossRef]

D. W. Koerner, M. E. Ressler, M. W. Werner, D. E. Backman, “Mid-infrared imaging of a circumstellar disk around HR 4796: mapping the debris of planetary formation,” Astrophys. J. 503, L83–L87 (1998).
[CrossRef]

T. L. Roellig, T. Onaka, T. J. McMahon, T. Tanabe, “The mid-infrared spectrometer on the Infrared Telescope in Space (IRTS) mission,” Astrophys. J. 428, 370–376 (1994).
[CrossRef]

Publ. Astron. Soc. Pacific (1)

T. Miyata, H. Kataza, Y. Okamoto, T. Tanabe, T. Onaka, Y. Yamashita, K. Nakamura, H. Shibai, “MICS: a new mid-infrared camera and spectrometer for ground-based astronomy,” Publ. Astron. Soc. Pacific 111, 750–764 (1999).
[CrossRef]

Other (2)

W. T. Welford, “Aberration theory of gratings and grating mountings,” in Progress in Optics, E. Wolf, ed. (Pergamon, New York, 1965), Vol. 4, pp. 241–280.

T. L. Roellig, K. Mochizuki, T. Onaka, T. Tanabe, I. Yamamura, L. Yuen, “Flight performance of the Mid-Infrared Spectrometer on the Infrared Telescope in Space mission,” in Infrared Spaceborne Remote Sensing IV, M. S. Scholl, B. F. Andresen, eds., Proc. SPIE2817, 258–266 (1996).

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